I would second SculpinSwinger's 2nd point here. And add...
learn 1 run that is known to be productive. If you learn that run really well, you'll learn which line works best, how it fishes in low or higher water and where the fish like to be. This will help you translate that to the next run. In fact, I would suggest 1 run that fishes well in regular flows and 1 run that fishes well in higher water, preferably with your same line setup or minimal adjustment.
Just pound those at first light, if you can, and you'll catch one eventually. I'll shut up now.